A plant microRNA regulates the adaptation of roots to drought stress.

@article{Chen2012APM,
  title={A plant microRNA regulates the adaptation of roots to drought stress.},
  author={Hao Chen and Zhuofu Li and Liming Xiong},
  journal={FEBS letters},
  year={2012},
  volume={586 12},
  pages={1742-7}
}
Plants tend to restrict their horizontal root proliferation in response to drought stress, an adaptive response mediated by the phytohormone abscisic acid (ABA) in antagonism with auxin through unknown mechanisms. Here, we found that stress-regulated miR393-guided cleavage of the transcripts encoding two auxin receptors, TIR1 and AFB2, was required for inhibition of lateral root growth by ABA or osmotic stress. Unlike in the control plants, the lateral root growth of seedlings expressing miR393… CONTINUE READING

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